A new nonlinear control technique that has one cycle response, does not need a resettable integrator in the control path, and has nearly constant switching frequency. It obtains one cycle response by forcing the error between the switched-variable and the control reference to zero each cycle, while the...http://www.google.de/patents/US6084450?utm_source=gb-gplus-sharePatent US6084450 - PWM controller with one cycle response
